Merlin Professional is one of Fabriahs most popular hair care brands, combining art & science to achieve unrivalled professional results. Used weekly, the Proline 30 Rebuilding Weekly Body Support Protein Power Treatment Is formulated to rebuild naturally weak & chemically altered hair including hair without natural body that grows flat against the scalp. It is designed to help eliminate split ends, reduce protein loss & add much needed volume. This treatment leaves hair strong with a deep shine & great natural body. All Merlin products are highly concentrated so a little goes a long way.